I was at gymnastics yesterday and we had a short

Patient

Q:I was at gymnastics yesterday and we had a short break after a good 2 hours of pure fitness and I stood up and all of a sudden I could bend my knee, without pain, I tried to walk but at the bottom of my patella it felt like something was jamming my knee from bending e.g a bubble, I examined both me knees comparing them and on my knee cap had moved outwards only a small bit,the pain is now slowly going but I have a bump where it was hurting and feels like there's fluid.

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